RK 920 Skeleton Cobra. High grade stainless-steel-case, With 18K Rose Gold PL Bezel.Automatic self winding Movement,with ball bearing.Base-Caliber ETA 2824-2 ,25 jewels ,sweep second,date-indication, stop second , water-resistant to 50m, sapphire crystal, and solid stitched Black Croco Calf strap with folding Clasp. Two Year Factory Warranty .Available in Diameter 40mm